Improvement in vertical tubular steam-boilers



H. WHITAKER.

rImprovement in Vertical Tubular Steam-Boilers.

No.129,381. Parentedjurymgmm.- l s R I6 Egt Y 1J P' IN1' M A G TT 1LTTTTTT TT a 1s c UNITED STATES PATENT OFFICE.

HARRY WHITAKER, OF NEW YORK, N. Y.

Specification forming part of Letters Patent No. 129,381, dated July 16,1872.

To all whom it may concern:

Be it known that I, HARRY WHITAKER, of New York city, State of New York,have invented new and useful Improvements in Steam- Boilers, that Istyle the Vertical Superlieat- 'ed Stea-m-Boiler;7 and I do herebydeclare the following to be an exact description `thereof, referencebeing had to the accompanying drawing and to the letters of referencemarked thereon making a part of this specification.

Figure l represents a vertical section of 'the steam boiler 5 Fig. 2, across-section of the same.

The nature of my invention consists in the perfectly-arched crown-platethrough which the water-tubes open into the water-chamber above from thewater-jacket at side. The object of my invention and improvement is togenerate steam quicker, and facilitate the superheatin g process bydispensing with the cylinder C and the coiled spiral tubes, and thesectional segment or crown-plate G, as shown in my patent dated June 23,1857, for improvements in steam-boilers, and making in the place of saidsegment of a circle, G, a perfect arch or' annular dome, through whichthe water-tubes open into the waterchamber above.

A represents the boiler that is intended to be about ten feet ten`inchesin height, and live feet in diameter. B, the smoke-box; C, the ash-pit;D, the grate; E, the tire-box; G,

the water-jacket; H, the combustion-chamber,

that is to contain one set or more of watertubes, according to the sizeof the space; J, the water-tubes that lead from the jacket at K to thecrown and annular dome L above, and open into the water-chamber M; N,the water-line; P, the steam-drum; R, the tubesheet; S, the smoke-pipe;'.l T, are the tiretubes, about eighty-tive in number, some of thembeing two inches in diameter, and others two and one-half inches indiameter, and the number of water-tubes about forty-eight.

What I claim as my invention, and desire to secure by Letters Patent,is-

The arched dome or crown-plate L, in combination with the water-jacketG, annular lirechamber E, descending and ascending liretubes T, andwater-tubes J J, as herein described, and for the purposes set forth.

HARRY WHIIAKER.

WVitnesses J. FRANKLIN REIGART, EDM. F. BROWN.

